database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-11 01:42:22 +03:00
Code Activity

A new implementation of sqlite3VdbeMakeLabel() is faster and makes fewer

Browse Source 
memory allocations by deferring memory allocation until 
sqlite3VdbeResolveLabel() is called, at which point the code generator has
a better idea of how big the relocation table needs to be.
The sqlite3VdbeMakeLabel() routine now takes a Parse* parameter instead of
Vdbe*.

FossilOrigin-Name: 4a0929ac76d8aa5dd65eac3b83d6bbf41e505e01d175ca0fb2b19ba02d439415
This commit is contained in:
drh
2018-12-29 02:26:59 +00:00
parent 81f9159b5e
commit ec4ccdbcb1
17 changed files with 112 additions and 104 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/delete.c
View File

@@ -517,7 +517,7 @@ void sqlite3DeleteFrom(
/* If this DELETE cannot use the ONEPASS strategy, this is the
** end of the WHERE loop */
if( eOnePass!=ONEPASS_OFF ){
addrBypass = sqlite3VdbeMakeLabel(v);
addrBypass = sqlite3VdbeMakeLabel(pParse);
}else{
sqlite3WhereEnd(pWInfo);
}
@@ -706,7 +706,7 @@ void sqlite3GenerateRowDelete(
/* Seek cursor iCur to the row to delete. If this row no longer exists
** (this can happen if a trigger program has already deleted it), do
** not attempt to delete it or fire any DELETE triggers. */
iLabel = sqlite3VdbeMakeLabel(v);
iLabel = sqlite3VdbeMakeLabel(pParse);
opSeek = HasRowid(pTab) ? OP_NotExists : OP_NotFound;
if( eMode==ONEPASS_OFF ){
sqlite3VdbeAddOp4Int(v, opSeek, iDataCur, iLabel, iPk, nPk);
@@ -912,7 +912,7 @@ int sqlite3GenerateIndexKey(
if( piPartIdxLabel ){
if( pIdx->pPartIdxWhere ){
*piPartIdxLabel = sqlite3VdbeMakeLabel(v);
*piPartIdxLabel = sqlite3VdbeMakeLabel(pParse);
pParse->iSelfTab = iDataCur + 1;
sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel,
SQLITE_JUMPIFNULL);